1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2013 Free Software
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
29 #endif /* HAVE_PWD_H */
37 #include "sysselect.h"
38 #include "blockinput.h"
40 #if defined DARWIN_OS || defined __FreeBSD__
41 # include <sys/sysctl.h>
46 #include <sys/resource.h>
52 #define write sys_write
54 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
57 #endif /* not WINDOWSNT */
59 #include <sys/types.h>
63 /* Get SI_SRPC_DOMAIN, if it is available. */
64 #ifdef HAVE_SYS_SYSTEMINFO_H
65 #include <sys/systeminfo.h>
68 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
72 #include <sys/param.h>
79 #ifdef HAVE_SYS_UTSNAME_H
80 #include <sys/utsname.h>
82 #endif /* HAVE_SYS_UTSNAME_H */
87 #include "termhooks.h"
90 #include "dispextern.h"
92 #include "cm.h" /* for reset_sys_modes */
96 /* In process.h which conflicts with the local copy. */
98 int _cdecl
_spawnlp (int, const char *, const char *, ...);
99 int _cdecl
_getpid (void);
102 #include "syssignal.h"
105 static void emacs_get_tty (int, struct emacs_tty
*);
106 static int emacs_set_tty (int, struct emacs_tty
*, bool);
108 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
110 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
113 /* Declare here, including term.h is problematic on some systems. */
114 extern void tputs (const char *, int, int (*)(int));
116 static const int baud_convert
[] =
118 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
119 1800, 2400, 4800, 9600, 19200, 38400
123 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
125 /* Return the current working directory. Returns NULL on errors.
126 Any other returned value must be freed with free. This is used
127 only when get_current_dir_name is not defined on the system. */
129 get_current_dir_name (void)
132 char *pwd
= getenv ("PWD");
133 struct stat dotstat
, pwdstat
;
134 /* If PWD is accurate, use it instead of calling getcwd. PWD is
135 sometimes a nicer name, and using it may avoid a fatal error if a
136 parent directory is searchable but not readable. */
138 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
139 && stat (pwd
, &pwdstat
) == 0
140 && stat (".", &dotstat
) == 0
141 && dotstat
.st_ino
== pwdstat
.st_ino
142 && dotstat
.st_dev
== pwdstat
.st_dev
144 && strlen (pwd
) < MAXPATHLEN
148 buf
= malloc (strlen (pwd
) + 1);
155 size_t buf_size
= 1024;
156 buf
= malloc (buf_size
);
161 if (getcwd (buf
, buf_size
) == buf
)
165 int tmp_errno
= errno
;
171 buf
= realloc (buf
, buf_size
);
181 /* Discard pending input on all input descriptors. */
184 discard_tty_input (void)
187 struct emacs_tty buf
;
192 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
193 while (dos_keyread () != -1)
195 #else /* not MSDOS */
197 struct tty_display_info
*tty
;
198 for (tty
= tty_list
; tty
; tty
= tty
->next
)
200 if (tty
->input
) /* Is the device suspended? */
202 emacs_get_tty (fileno (tty
->input
), &buf
);
203 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
207 #endif /* not MSDOS */
208 #endif /* not WINDOWSNT */
214 /* Arrange for character C to be read as the next input from
216 XXX What if we have multiple ttys?
222 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
225 /* Should perhaps error if in batch mode */
227 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
228 #else /* no TIOCSTI */
229 error ("Cannot stuff terminal input characters in this version of Unix");
230 #endif /* no TIOCSTI */
236 init_baud_rate (int fd
)
246 #else /* not DOS_NT */
251 emacs_ospeed
= cfgetospeed (&sg
);
252 #endif /* not DOS_NT */
255 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
256 ? baud_convert
[emacs_ospeed
] : 9600);
265 /* Wait for the subprocess with process id CHILD to terminate or change status.
266 CHILD must be a child process that has not been reaped.
267 If STATUS is non-null, store the waitpid-style exit status into *STATUS
268 and tell wait_reading_process_output that it needs to look around.
269 Use waitpid-style OPTIONS when waiting.
270 If INTERRUPTIBLE, this function is interruptible by a signal.
272 Return CHILD if successful, 0 if no status is available;
273 the latter is possible only when options & NOHANG. */
275 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
279 /* Invoke waitpid only with a known process ID; do not invoke
280 waitpid with a nonpositive argument. Otherwise, Emacs might
281 reap an unwanted process by mistake. For example, invoking
282 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
283 so that another thread running glib won't find them. */
286 while ((pid
= waitpid (child
, status
, options
)) < 0)
288 /* Check that CHILD is a child process that has not been reaped,
289 and that STATUS and OPTIONS are valid. Otherwise abort,
290 as continuing after this internal error could cause Emacs to
291 become confused and kill innocent-victim processes. */
295 /* Note: the MS-Windows emulation of waitpid calls QUIT
301 /* If successful and status is requested, tell wait_reading_process_output
302 that it needs to wake up and look around. */
303 if (pid
&& status
&& input_available_clear_time
)
304 *input_available_clear_time
= make_emacs_time (0, 0);
309 /* Wait for the subprocess with process id CHILD to terminate.
310 CHILD must be a child process that has not been reaped.
311 If STATUS is non-null, store the waitpid-style exit status into *STATUS
312 and tell wait_reading_process_output that it needs to look around.
313 If INTERRUPTIBLE, this function is interruptible by a signal. */
315 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
317 get_child_status (child
, status
, 0, interruptible
);
320 /* Report whether the subprocess with process id CHILD has changed status.
321 Termination counts as a change of status.
322 CHILD must be a child process that has not been reaped.
323 If STATUS is non-null, store the waitpid-style exit status into *STATUS
324 and tell wait_reading_process_output that it needs to look around.
325 Use waitpid-style OPTIONS to check status, but do not wait.
327 Return CHILD if successful, 0 if no status is available because
328 the process's state has not changed. */
330 child_status_changed (pid_t child
, int *status
, int options
)
332 return get_child_status (child
, status
, WNOHANG
| options
, 0);
336 * flush any pending output
337 * (may flush input as well; it does not matter the way we use it)
341 flush_pending_output (int channel
)
343 /* FIXME: maybe this function should be removed */
346 /* Set up the terminal at the other end of a pseudo-terminal that
347 we will be controlling an inferior through.
348 It should not echo or do line-editing, since that is done
349 in Emacs. No padding needed for insertion into an Emacs buffer. */
352 child_setup_tty (int out
)
357 emacs_get_tty (out
, &s
);
358 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
359 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
361 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
362 Some versions of GNU Hurd do not have FFDLY? */
364 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
365 /* No output delays */
367 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
368 /* No output delays */
371 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
372 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
374 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
377 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
380 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
382 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
383 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
384 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
385 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
388 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
391 #ifdef SIGNALS_VIA_CHARACTERS
392 /* the QUIT and INTR character are used in process_send_signal
393 so set them here to something useful. */
394 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
395 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
396 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
397 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
398 #endif /* not SIGNALS_VIA_CHARACTERS */
401 /* Also, PTY overloads NUL and BREAK.
402 don't ignore break, but don't signal either, so it looks like NUL. */
403 s
.main
.c_iflag
&= ~IGNBRK
;
404 s
.main
.c_iflag
&= ~BRKINT
;
405 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
406 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
407 would force it to 0377. That looks like duplicated code. */
408 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
411 /* We originally enabled ICANON (and set VEOF to 04), and then had
412 process.c send additional EOF chars to flush the output when faced
413 with long lines, but this leads to weird effects when the
414 subprocess has disabled ICANON and ends up seeing those spurious
415 extra EOFs. So we don't send EOFs any more in
416 process.c:send_process. First we tried to disable ICANON by
417 default, so if a subsprocess sets up ICANON, it's his problem (or
418 the Elisp package that talks to it) to deal with lines that are
419 too long. But this disables some features, such as the ability
420 to send EOF signals. So we re-enabled ICANON but there is no
421 more "send eof to flush" going on (which is wrong and unportable
422 in itself). The correct way to handle too much output is to
423 buffer what could not be written and then write it again when
424 select returns ok for writing. This has it own set of
425 problems. Write is now asynchronous, is that a problem? How much
426 do we buffer, and what do we do when that limit is reached? */
428 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
429 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
430 #if 0 /* These settings only apply to non-ICANON mode. */
431 s
.main
.c_cc
[VMIN
] = 1;
432 s
.main
.c_cc
[VTIME
] = 0;
435 emacs_set_tty (out
, &s
, 0);
436 #endif /* not WINDOWSNT */
438 #endif /* not MSDOS */
441 /* Record a signal code and the action for it. */
445 struct sigaction action
;
448 static void save_signal_handlers (struct save_signal
*);
449 static void restore_signal_handlers (struct save_signal
*);
451 /* Suspend the Emacs process; give terminal to its superior. */
459 /* On a system where suspending is not implemented,
460 instead fork a subshell and let it talk directly to the terminal
467 /* Fork a subshell. */
472 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
474 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
478 struct save_signal saved_handlers
[5];
480 unsigned char *volatile str_volatile
= 0;
484 saved_handlers
[0].code
= SIGINT
;
485 saved_handlers
[1].code
= SIGQUIT
;
486 saved_handlers
[2].code
= SIGTERM
;
488 saved_handlers
[3].code
= SIGIO
;
489 saved_handlers
[4].code
= 0;
491 saved_handlers
[3].code
= 0;
494 /* Mentioning current_buffer->buffer would mean including buffer.h,
495 which somehow wedges the hp compiler. So instead... */
497 dir
= intern ("default-directory");
498 if (NILP (Fboundp (dir
)))
500 dir
= Fsymbol_value (dir
);
504 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
505 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
507 memcpy (str
, SDATA (dir
), len
);
508 if (str
[len
- 1] != '/') str
[len
++] = '/';
514 save_signal_handlers (saved_handlers
);
518 error ("Can't spawn subshell");
525 #ifdef DOS_NT /* MW, Aug 1993 */
526 getcwd (oldwd
, sizeof oldwd
);
528 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
531 sh
= egetenv ("SHELL");
535 /* Use our buffer's default directory for the subshell. */
537 if (str
&& chdir ((char *) str
) != 0)
540 emacs_perror ((char *) str
);
541 _exit (EXIT_CANCELED
);
545 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
547 char *epwd
= getenv ("PWD");
548 char old_pwd
[MAXPATHLEN
+1+4];
550 /* If PWD is set, pass it with corrected value. */
553 strcpy (old_pwd
, epwd
);
554 if (str
[len
- 1] == '/')
556 setenv ("PWD", str
, 1);
559 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
561 putenv (old_pwd
); /* restore previous value */
563 #else /* not MSDOS */
565 /* Waits for process completion */
566 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
567 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
569 write (1, "Can't execute subshell", 22);
570 #else /* not WINDOWSNT */
571 execlp (sh
, sh
, (char *) 0);
573 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
574 #endif /* not WINDOWSNT */
575 #endif /* not MSDOS */
578 /* Do this now if we did not do it before. */
580 save_signal_handlers (saved_handlers
);
584 wait_for_termination (pid
, &status
, 0);
586 restore_signal_handlers (saved_handlers
);
590 save_signal_handlers (struct save_signal
*saved_handlers
)
592 while (saved_handlers
->code
)
594 struct sigaction action
;
595 emacs_sigaction_init (&action
, SIG_IGN
);
596 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
602 restore_signal_handlers (struct save_signal
*saved_handlers
)
604 while (saved_handlers
->code
)
606 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
612 static int old_fcntl_flags
[MAXDESC
];
619 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
620 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
621 interrupts_deferred
= 0;
629 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
642 sigemptyset (&unblocked
);
644 sigaddset (&unblocked
, SIGWINCH
);
646 sigaddset (&unblocked
, SIGIO
);
647 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
649 interrupts_deferred
= 0;
654 unrequest_sigio (void)
662 sigemptyset (&blocked
);
664 sigaddset (&blocked
, SIGWINCH
);
666 sigaddset (&blocked
, SIGIO
);
667 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
668 interrupts_deferred
= 1;
676 signal (SIGIO
, SIG_IGN
);
681 /* Saving and restoring the process group of Emacs's terminal. */
683 /* The process group of which Emacs was a member when it initially
686 If Emacs was in its own process group (i.e. inherited_pgroup ==
687 getpid ()), then we know we're running under a shell with job
688 control (Emacs would never be run as part of a pipeline).
691 If Emacs was not in its own process group, then we know we're
692 running under a shell (or a caller) that doesn't know how to
693 separate itself from Emacs (like sh). Emacs must be in its own
694 process group in order to receive SIGIO correctly. In this
695 situation, we put ourselves in our own pgroup, forcibly set the
696 tty's pgroup to our pgroup, and make sure to restore and reinstate
697 the tty's pgroup just like any other terminal setting. If
698 inherited_group was not the tty's pgroup, then we'll get a
699 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
700 it goes foreground in the future, which is what should happen. */
702 static pid_t inherited_pgroup
;
705 init_foreground_group (void)
707 pid_t pgrp
= getpgrp ();
708 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
711 /* Block and unblock SIGTTOU. */
714 block_tty_out_signal (void)
718 sigemptyset (&blocked
);
719 sigaddset (&blocked
, SIGTTOU
);
720 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
725 unblock_tty_out_signal (void)
728 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
732 /* Safely set a controlling terminal FD's process group to PGID.
733 If we are not in the foreground already, POSIX requires tcsetpgrp
734 to deliver a SIGTTOU signal, which would stop us. This is an
735 annoyance, so temporarily ignore the signal.
737 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
738 skip all this unless SIGTTOU is defined. */
740 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
744 block_tty_out_signal ();
745 tcsetpgrp (fd
, pgid
);
746 unblock_tty_out_signal ();
751 /* Split off the foreground process group to Emacs alone. When we are
752 in the foreground, but not started in our own process group,
753 redirect the tty device handle FD to point to our own process
754 group. FD must be the file descriptor of the controlling tty. */
756 narrow_foreground_group (int fd
)
758 if (inherited_pgroup
&& setpgid (0, 0) == 0)
759 tcsetpgrp_without_stopping (fd
, getpid ());
762 /* Set the tty to our original foreground group. */
764 widen_foreground_group (int fd
)
766 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
767 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
770 /* Getting and setting emacs_tty structures. */
772 /* Set *TC to the parameters associated with the terminal FD,
773 or clear it if the parameters are not available. */
775 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
777 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
779 /* We have those nifty POSIX tcmumbleattr functions. */
780 memset (&settings
->main
, 0, sizeof (settings
->main
));
781 tcgetattr (fd
, &settings
->main
);
786 /* Set the parameters of the tty on FD according to the contents of
787 *SETTINGS. If FLUSHP, discard input.
788 Return 0 if all went well, and -1 (setting errno) if anything failed. */
791 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
793 /* Set the primary parameters - baud rate, character size, etcetera. */
796 /* We have those nifty POSIX tcmumbleattr functions.
797 William J. Smith <wjs@wiis.wang.com> writes:
798 "POSIX 1003.1 defines tcsetattr to return success if it was
799 able to perform any of the requested actions, even if some
800 of the requested actions could not be performed.
801 We must read settings back to ensure tty setup properly.
802 AIX requires this to keep tty from hanging occasionally." */
803 /* This make sure that we don't loop indefinitely in here. */
804 for (i
= 0 ; i
< 10 ; i
++)
805 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
816 memset (&new, 0, sizeof (new));
817 /* Get the current settings, and see if they're what we asked for. */
818 tcgetattr (fd
, &new);
819 /* We cannot use memcmp on the whole structure here because under
820 * aix386 the termios structure has some reserved field that may
823 if ( new.c_iflag
== settings
->main
.c_iflag
824 && new.c_oflag
== settings
->main
.c_oflag
825 && new.c_cflag
== settings
->main
.c_cflag
826 && new.c_lflag
== settings
->main
.c_lflag
827 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
834 /* We have survived the tempest. */
841 static int old_fcntl_owner
[MAXDESC
];
842 #endif /* F_SETOWN */
844 /* This may also be defined in stdio,
845 but if so, this does no harm,
846 and using the same name avoids wasting the other one's space. */
849 unsigned char _sobuf
[BUFSIZ
+8];
854 /* Initialize the terminal mode on all tty devices that are currently
858 init_all_sys_modes (void)
860 struct tty_display_info
*tty
;
861 for (tty
= tty_list
; tty
; tty
= tty
->next
)
862 init_sys_modes (tty
);
865 /* Initialize the terminal mode on the given tty device. */
868 init_sys_modes (struct tty_display_info
*tty_out
)
870 struct emacs_tty tty
;
871 Lisp_Object terminal
;
873 Vtty_erase_char
= Qnil
;
878 if (!tty_out
->output
)
879 return; /* The tty is suspended. */
881 narrow_foreground_group (fileno (tty_out
->input
));
883 if (! tty_out
->old_tty
)
884 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
886 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
888 tty
= *tty_out
->old_tty
;
890 #if !defined (DOS_NT)
891 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
893 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
894 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
895 #ifdef INLCR /* I'm just being cautious,
896 since I can't check how widespread INLCR is--rms. */
897 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
900 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
902 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
903 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
905 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
907 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
908 if (tty_out
->flow_control
)
910 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
912 tty
.main
.c_iflag
&= ~IXANY
;
916 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
917 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
919 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
921 if (tty_out
->meta_key
)
923 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
924 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
928 XSETTERMINAL(terminal
, tty_out
->terminal
);
929 if (!NILP (Fcontrolling_tty_p (terminal
)))
931 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
932 /* Set up C-g for both SIGQUIT and SIGINT.
933 We don't know which we will get, but we handle both alike
934 so which one it really gives us does not matter. */
935 tty
.main
.c_cc
[VQUIT
] = quit_char
;
939 /* We normally don't get interrupt or quit signals from tty
940 devices other than our controlling terminal; therefore,
941 we must handle C-g as normal input. Unfortunately, this
942 means that the interrupt and quit feature must be
943 disabled on secondary ttys, or we would not even see the
946 Note that even though emacsclient could have special code
947 to pass SIGINT to Emacs, we should _not_ enable
948 interrupt/quit keys for emacsclient frames. This means
949 that we can't break out of loops in C code from a
950 secondary tty frame, but we can always decide what
951 display the C-g came from, which is more important from a
952 usability point of view. (Consider the case when two
953 people work together using the same Emacs instance.) */
954 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
955 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
957 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
958 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
960 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
965 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
968 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
970 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
971 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
974 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
977 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
978 #endif /* VREPRINT */
980 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
983 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
984 #endif /* VDISCARD */
986 if (tty_out
->flow_control
)
989 tty
.main
.c_cc
[VSTART
] = '\021';
992 tty
.main
.c_cc
[VSTOP
] = '\023';
998 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1001 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1006 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1007 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1008 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1009 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1010 if (tty_out
->flow_control
)
1013 tty
.main
.c_cc
[VSTART
] = '\021';
1016 tty
.main
.c_cc
[VSTOP
] = '\023';
1019 /* Also, PTY overloads NUL and BREAK.
1020 don't ignore break, but don't signal either, so it looks like NUL.
1021 This really serves a purpose only if running in an XTERM window
1022 or via TELNET or the like, but does no harm elsewhere. */
1023 tty
.main
.c_iflag
&= ~IGNBRK
;
1024 tty
.main
.c_iflag
&= ~BRKINT
;
1026 #endif /* not DOS_NT */
1028 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1029 if (!tty_out
->term_initted
)
1030 internal_terminal_init ();
1031 dos_ttraw (tty_out
);
1034 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1036 /* This code added to insure that, if flow-control is not to be used,
1037 we have an unlocked terminal at the start. */
1040 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1043 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1046 #if !defined (DOS_NT)
1048 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1053 if (interrupt_input
)
1055 old_fcntl_owner
[fileno (tty_out
->input
)] =
1056 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1057 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1058 init_sigio (fileno (tty_out
->input
));
1060 if (gpm_tty
== tty_out
)
1062 /* Arrange for mouse events to give us SIGIO signals. */
1063 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1064 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1065 init_sigio (gpm_fd
);
1067 #endif /* HAVE_GPM */
1069 #endif /* F_GETOWN */
1072 /* This symbol is defined on recent USG systems.
1073 Someone says without this call USG won't really buffer the file
1074 even with a call to setbuf. */
1075 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1077 setbuf (tty_out
->output
, (char *) _sobuf
);
1080 if (tty_out
->terminal
->set_terminal_modes_hook
)
1081 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1083 if (!tty_out
->term_initted
)
1085 Lisp_Object tail
, frame
;
1086 FOR_EACH_FRAME (tail
, frame
)
1088 /* XXX This needs to be revised. */
1089 if (FRAME_TERMCAP_P (XFRAME (frame
))
1090 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1091 init_frame_faces (XFRAME (frame
));
1095 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1097 /* We used to call "direct_output_forward_char(0)" here,
1098 but it's not clear why, since it may not do anything anyway. */
1102 Lisp_Object tail
, frame
;
1104 FOR_EACH_FRAME (tail
, frame
)
1106 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1107 || FRAME_MSDOS_P (XFRAME (frame
)))
1108 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1109 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1113 tty_out
->term_initted
= 1;
1116 /* Return true if safe to use tabs in output.
1117 At the time this is called, init_sys_modes has not been done yet. */
1120 tabs_safe_p (int fd
)
1122 struct emacs_tty etty
;
1124 emacs_get_tty (fd
, &etty
);
1127 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1128 #else /* not TABDLY */
1130 #endif /* not TABDLY */
1136 /* Get terminal size from system.
1137 Store number of lines into *HEIGHTP and width into *WIDTHP.
1138 We store 0 if there's no valid information. */
1141 get_tty_size (int fd
, int *widthp
, int *heightp
)
1143 #if defined TIOCGWINSZ
1146 struct winsize size
;
1148 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1149 *widthp
= *heightp
= 0;
1152 *widthp
= size
.ws_col
;
1153 *heightp
= size
.ws_row
;
1156 #elif defined TIOCGSIZE
1158 /* SunOS - style. */
1159 struct ttysize size
;
1161 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1162 *widthp
= *heightp
= 0;
1165 *widthp
= size
.ts_cols
;
1166 *heightp
= size
.ts_lines
;
1169 #elif defined WINDOWSNT
1171 CONSOLE_SCREEN_BUFFER_INFO info
;
1172 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1174 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1175 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1178 *widthp
= *heightp
= 0;
1182 *widthp
= ScreenCols ();
1183 *heightp
= ScreenRows ();
1185 #else /* system doesn't know size */
1193 /* Set the logical window size associated with descriptor FD
1194 to HEIGHT and WIDTH. This is used mainly with ptys. */
1197 set_window_size (int fd
, int height
, int width
)
1202 struct winsize size
;
1203 size
.ws_row
= height
;
1204 size
.ws_col
= width
;
1206 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1207 return 0; /* error */
1214 /* SunOS - style. */
1215 struct ttysize size
;
1216 size
.ts_lines
= height
;
1217 size
.ts_cols
= width
;
1219 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1225 #endif /* not SunOS-style */
1226 #endif /* not BSD-style */
1231 /* Prepare all terminal devices for exiting Emacs. */
1234 reset_all_sys_modes (void)
1236 struct tty_display_info
*tty
;
1237 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1238 reset_sys_modes (tty
);
1241 /* Prepare the terminal for closing it; move the cursor to the
1242 bottom of the frame, turn off interrupt-driven I/O, etc. */
1245 reset_sys_modes (struct tty_display_info
*tty_out
)
1252 if (!tty_out
->term_initted
)
1255 if (!tty_out
->output
)
1256 return; /* The tty is suspended. */
1258 /* Go to and clear the last line of the terminal. */
1260 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1262 /* Code adapted from tty_clear_end_of_line. */
1263 if (tty_out
->TS_clr_line
)
1265 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1268 { /* have to do it the hard way */
1270 tty_turn_off_insert (tty_out
);
1272 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1274 fputc (' ', tty_out
->output
);
1278 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1279 fflush (tty_out
->output
);
1281 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1282 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1284 /* Avoid possible loss of output when changing terminal modes. */
1285 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1290 if (interrupt_input
)
1292 reset_sigio (fileno (tty_out
->input
));
1293 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1294 old_fcntl_owner
[fileno (tty_out
->input
)]);
1296 #endif /* F_SETOWN */
1297 fcntl (fileno (tty_out
->input
), F_SETFL
,
1298 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1301 if (tty_out
->old_tty
)
1302 while (emacs_set_tty (fileno (tty_out
->input
),
1303 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1306 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1310 widen_foreground_group (fileno (tty_out
->input
));
1315 /* Set up the proper status flags for use of a pty. */
1320 /* I'm told that TOICREMOTE does not mean control chars
1321 "can't be sent" but rather that they don't have
1322 input-editing or signaling effects.
1323 That should be good, because we have other ways
1324 to do those things in Emacs.
1325 However, telnet mode seems not to work on 4.2.
1326 So TIOCREMOTE is turned off now. */
1328 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1329 will hang. In particular, the "timeout" feature (which
1330 causes a read to return if there is no data available)
1331 does this. Also it is known that telnet mode will hang
1332 in such a way that Emacs must be stopped (perhaps this
1333 is the same problem).
1335 If TIOCREMOTE is turned off, then there is a bug in
1336 hp-ux which sometimes loses data. Apparently the
1337 code which blocks the master process when the internal
1338 buffer fills up does not work. Other than this,
1339 though, everything else seems to work fine.
1341 Since the latter lossage is more benign, we may as well
1342 lose that way. -- cph */
1344 #if defined (UNIX98_PTYS)
1347 ioctl (fd
, FIONBIO
, &on
);
1352 #endif /* HAVE_PTYS */
1355 #include <sys/socket.h>
1357 #endif /* HAVE_SOCKETS */
1360 #ifndef HAVE_H_ERRNO
1363 #endif /* TRY_AGAIN */
1366 init_system_name (void)
1368 #ifndef HAVE_GETHOSTNAME
1371 Vsystem_name
= build_string (uts
.nodename
);
1372 #else /* HAVE_GETHOSTNAME */
1373 char *hostname_alloc
= NULL
;
1374 char hostname_buf
[256];
1375 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1376 char *hostname
= hostname_buf
;
1378 /* Try to get the host name; if the buffer is too short, try
1379 again. Apparently, the only indication gethostname gives of
1380 whether the buffer was large enough is the presence or absence
1381 of a '\0' in the string. Eech. */
1384 gethostname (hostname
, hostname_size
- 1);
1385 hostname
[hostname_size
- 1] = '\0';
1387 /* Was the buffer large enough for the '\0'? */
1388 if (strlen (hostname
) < hostname_size
- 1)
1391 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1392 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1395 /* Turn the hostname into the official, fully-qualified hostname.
1396 Don't do this if we're going to dump; this can confuse system
1397 libraries on some machines and make the dumped emacs core dump. */
1400 #endif /* not CANNOT_DUMP */
1401 if (! strchr (hostname
, '.'))
1404 #ifdef HAVE_GETADDRINFO
1405 struct addrinfo
*res
;
1406 struct addrinfo hints
;
1409 memset (&hints
, 0, sizeof (hints
));
1410 hints
.ai_socktype
= SOCK_STREAM
;
1411 hints
.ai_flags
= AI_CANONNAME
;
1413 for (count
= 0;; count
++)
1415 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1416 || ret
!= EAI_AGAIN
)
1421 Fsleep_for (make_number (1), Qnil
);
1426 struct addrinfo
*it
= res
;
1429 char *fqdn
= it
->ai_canonname
;
1430 if (fqdn
&& strchr (fqdn
, '.')
1431 && strcmp (fqdn
, "localhost.localdomain") != 0)
1437 ptrdiff_t len
= strlen (it
->ai_canonname
);
1438 if (hostname_size
<= len
)
1440 hostname_size
= len
+ 1;
1441 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1444 strcpy (hostname
, it
->ai_canonname
);
1448 #else /* !HAVE_GETADDRINFO */
1450 for (count
= 0;; count
++)
1456 hp
= gethostbyname (hostname
);
1458 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1465 Fsleep_for (make_number (1), Qnil
);
1470 char *fqdn
= (char *) hp
->h_name
;
1472 if (!strchr (fqdn
, '.'))
1474 /* We still don't have a fully qualified domain name.
1475 Try to find one in the list of alternate names */
1476 char **alias
= hp
->h_aliases
;
1478 && (!strchr (*alias
, '.')
1479 || !strcmp (*alias
, "localhost.localdomain")))
1486 #endif /* !HAVE_GETADDRINFO */
1488 #endif /* HAVE_SOCKETS */
1489 Vsystem_name
= build_string (hostname
);
1490 xfree (hostname_alloc
);
1491 #endif /* HAVE_GETHOSTNAME */
1494 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1495 if (*p
== ' ' || *p
== '\t')
1500 sigset_t empty_mask
;
1502 static struct sigaction process_fatal_action
;
1505 emacs_sigaction_flags (void)
1508 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1509 'select') to reset their timeout on some platforms (e.g.,
1510 HP-UX 11), which is not what we want. Also, when Emacs is
1511 interactive, we don't want SA_RESTART because we need to poll
1512 for pending input so we need long-running syscalls to be interrupted
1513 after a signal that sets pending_signals.
1515 Non-interactive keyboard input goes through stdio, where we
1516 always want restartable system calls. */
1523 /* Store into *ACTION a signal action suitable for Emacs, with handler
1526 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1528 sigemptyset (&action
->sa_mask
);
1530 /* When handling a signal, block nonfatal system signals that are caught
1531 by Emacs. This makes race conditions less likely. */
1532 sigaddset (&action
->sa_mask
, SIGALRM
);
1533 sigaddset (&action
->sa_mask
, SIGCHLD
);
1535 sigaddset (&action
->sa_mask
, SIGDANGER
);
1537 #ifdef PROFILER_CPU_SUPPORT
1538 sigaddset (&action
->sa_mask
, SIGPROF
);
1541 sigaddset (&action
->sa_mask
, SIGWINCH
);
1543 if (! noninteractive
)
1545 sigaddset (&action
->sa_mask
, SIGINT
);
1546 sigaddset (&action
->sa_mask
, SIGQUIT
);
1548 sigaddset (&action
->sa_mask
, SIGIO
);
1552 if (! IEEE_FLOATING_POINT
)
1553 sigaddset (&action
->sa_mask
, SIGFPE
);
1555 action
->sa_handler
= handler
;
1556 action
->sa_flags
= emacs_sigaction_flags ();
1559 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1560 static pthread_t main_thread
;
1563 /* SIG has arrived at the current process. Deliver it to the main
1564 thread, which should handle it with HANDLER.
1566 If we are on the main thread, handle the signal SIG with HANDLER.
1567 Otherwise, redirect the signal to the main thread, blocking it from
1568 this thread. POSIX says any thread can receive a signal that is
1569 associated with a process, process group, or asynchronous event.
1570 On GNU/Linux that is not true, but for other systems (FreeBSD at
1573 deliver_process_signal (int sig
, signal_handler_t handler
)
1575 /* Preserve errno, to avoid race conditions with signal handlers that
1576 might change errno. Races can occur even in single-threaded hosts. */
1577 int old_errno
= errno
;
1579 bool on_main_thread
= true;
1580 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1581 if (! pthread_equal (pthread_self (), main_thread
))
1584 sigemptyset (&blocked
);
1585 sigaddset (&blocked
, sig
);
1586 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1587 pthread_kill (main_thread
, sig
);
1588 on_main_thread
= false;
1597 /* Static location to save a fatal backtrace in a thread.
1598 FIXME: If two subsidiary threads fail simultaneously, the resulting
1599 backtrace may be garbage. */
1600 enum { BACKTRACE_LIMIT_MAX
= 500 };
1601 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1602 static int thread_backtrace_npointers
;
1604 /* SIG has arrived at the current thread.
1605 If we are on the main thread, handle the signal SIG with HANDLER.
1606 Otherwise, this is a fatal error in the handling thread. */
1608 deliver_thread_signal (int sig
, signal_handler_t handler
)
1610 int old_errno
= errno
;
1612 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1613 if (! pthread_equal (pthread_self (), main_thread
))
1615 thread_backtrace_npointers
1616 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1617 sigaction (sig
, &process_fatal_action
, 0);
1618 pthread_kill (main_thread
, sig
);
1620 /* Avoid further damage while the main thread is exiting. */
1622 sigsuspend (&empty_mask
);
1630 #if !HAVE_DECL_SYS_SIGLIST
1632 # ifdef _sys_siglist
1633 # define sys_siglist _sys_siglist
1634 # elif HAVE_DECL___SYS_SIGLIST
1635 # define sys_siglist __sys_siglist
1637 # define sys_siglist my_sys_siglist
1638 static char const *sys_siglist
[NSIG
];
1643 # define sys_siglist_entries _sys_nsig
1645 # define sys_siglist_entries NSIG
1648 /* Handle bus errors, invalid instruction, etc. */
1650 handle_fatal_signal (int sig
)
1652 terminate_due_to_signal (sig
, 40);
1656 deliver_fatal_signal (int sig
)
1658 deliver_process_signal (sig
, handle_fatal_signal
);
1662 deliver_fatal_thread_signal (int sig
)
1664 deliver_thread_signal (sig
, handle_fatal_signal
);
1667 static _Noreturn
void
1668 handle_arith_signal (int sig
)
1670 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1671 xsignal0 (Qarith_error
);
1675 deliver_arith_signal (int sig
)
1677 deliver_thread_signal (sig
, handle_arith_signal
);
1682 /* Handler for SIGDANGER. */
1684 handle_danger_signal (int sig
)
1686 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1688 /* It might be unsafe to call do_auto_save now. */
1689 force_auto_save_soon ();
1693 deliver_danger_signal (int sig
)
1695 deliver_process_signal (sig
, handle_danger_signal
);
1699 /* Treat SIG as a terminating signal, unless it is already ignored and
1700 we are in --batch mode. Among other things, this makes nohup work. */
1702 maybe_fatal_sig (int sig
)
1704 bool catch_sig
= !noninteractive
;
1707 struct sigaction old_action
;
1708 sigaction (sig
, 0, &old_action
);
1709 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1712 sigaction (sig
, &process_fatal_action
, 0);
1716 init_signals (bool dumping
)
1718 struct sigaction thread_fatal_action
;
1719 struct sigaction action
;
1721 sigemptyset (&empty_mask
);
1723 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1724 main_thread
= pthread_self ();
1727 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1730 sys_siglist
[SIGABRT
] = "Aborted";
1732 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1734 sys_siglist
[SIGALRM
] = "Alarm clock";
1736 sys_siglist
[SIGBUS
] = "Bus error";
1738 sys_siglist
[SIGCHLD
] = "Child status changed";
1740 sys_siglist
[SIGCONT
] = "Continued";
1743 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1746 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1749 sys_siglist
[SIGEMT
] = "Emulation trap";
1751 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1753 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1756 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1758 sys_siglist
[SIGHUP
] = "Hangup";
1759 sys_siglist
[SIGILL
] = "Illegal instruction";
1760 sys_siglist
[SIGINT
] = "Interrupt";
1762 sys_siglist
[SIGIO
] = "I/O possible";
1765 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1768 sys_siglist
[SIGIOT
] = "IOT trap";
1770 sys_siglist
[SIGKILL
] = "Killed";
1772 sys_siglist
[SIGLOST
] = "Resource lost";
1775 sys_siglist
[SIGLWP
] = "SIGLWP";
1778 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1781 sys_siglist
[SIGWIND
] = "SIGPHONE";
1783 sys_siglist
[SIGPIPE
] = "Broken pipe";
1785 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1788 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1791 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1794 sys_siglist
[SIGPWR
] = "Power-fail restart";
1796 sys_siglist
[SIGQUIT
] = "Quit";
1798 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1801 sys_siglist
[SIGSAK
] = "Secure attention";
1803 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1805 sys_siglist
[SIGSOUND
] = "Sound completed";
1808 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1811 sys_siglist
[SIGSTP
] = "Stopped (user)";
1814 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1816 sys_siglist
[SIGTERM
] = "Terminated";
1818 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1821 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1824 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1827 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1830 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1833 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1836 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1839 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1842 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1845 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1848 sys_siglist
[SIGWINCH
] = "Window size changed";
1851 sys_siglist
[SIGWIND
] = "SIGWIND";
1854 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1857 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1860 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1862 /* Don't alter signal handlers if dumping. On some machines,
1863 changing signal handlers sets static data that would make signals
1864 fail to work right when the dumped Emacs is run. */
1868 sigfillset (&process_fatal_action
.sa_mask
);
1869 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1870 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1872 sigfillset (&thread_fatal_action
.sa_mask
);
1873 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1874 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1876 /* SIGINT may need special treatment on MS-Windows. See
1877 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1878 Please update the doc of kill-emacs, kill-emacs-hook, and
1879 NEWS if you change this. */
1881 maybe_fatal_sig (SIGHUP
);
1882 maybe_fatal_sig (SIGINT
);
1883 maybe_fatal_sig (SIGTERM
);
1885 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1886 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1887 to behave more like typical batch applications do. */
1888 if (! noninteractive
)
1889 signal (SIGPIPE
, SIG_IGN
);
1891 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1892 sigaction (SIGILL
, &thread_fatal_action
, 0);
1893 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1895 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1896 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1897 interpreter's floating point operations, so treat SIGFPE as an
1898 arith-error if it arises in the main thread. */
1899 if (IEEE_FLOATING_POINT
)
1900 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1903 emacs_sigaction_init (&action
, deliver_arith_signal
);
1904 sigaction (SIGFPE
, &action
, 0);
1908 add_user_signal (SIGUSR1
, "sigusr1");
1911 add_user_signal (SIGUSR2
, "sigusr2");
1913 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1915 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1918 sigaction (SIGORE
, &thread_fatal_action
, 0);
1921 sigaction (SIGUME
, &thread_fatal_action
, 0);
1924 sigaction (SIGDLK
, &process_fatal_action
, 0);
1927 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1930 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1933 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1936 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1938 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1940 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1942 sigaction (SIGTERM
, &process_fatal_action
, 0);
1944 signal (SIGPROF
, SIG_IGN
);
1947 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1950 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1953 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1957 /* This just means available memory is getting low. */
1958 emacs_sigaction_init (&action
, deliver_danger_signal
);
1959 sigaction (SIGDANGER
, &action
, 0);
1962 /* AIX-specific signals. */
1964 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1967 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1970 sigaction (SIGMSG
, &process_fatal_action
, 0);
1973 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1976 sigaction (SIGSAK
, &process_fatal_action
, 0);
1979 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1982 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1992 /* Figure out how many bits the system's random number generator uses.
1993 `random' and `lrand48' are assumed to return 31 usable bits.
1994 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1995 so we'll shift it and treat it like the 15-bit USG `rand'. */
1999 # define RAND_BITS 31
2000 # else /* !HAVE_RANDOM */
2001 # ifdef HAVE_LRAND48
2002 # define RAND_BITS 31
2003 # define random lrand48
2004 # else /* !HAVE_LRAND48 */
2005 # define RAND_BITS 15
2006 # if RAND_MAX == 32767
2007 # define random rand
2008 # else /* RAND_MAX != 32767 */
2009 # if RAND_MAX == 2147483647
2010 # define random() (rand () >> 16)
2011 # else /* RAND_MAX != 2147483647 */
2013 # define random rand
2015 # define random() (rand () >> 16)
2017 # endif /* RAND_MAX != 2147483647 */
2018 # endif /* RAND_MAX != 32767 */
2019 # endif /* !HAVE_LRAND48 */
2020 # endif /* !HAVE_RANDOM */
2021 #endif /* !RAND_BITS */
2024 seed_random (void *seed
, ptrdiff_t seed_size
)
2026 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2027 unsigned int arg
= 0;
2031 unsigned char *argp
= (unsigned char *) &arg
;
2032 unsigned char *seedp
= seed
;
2034 for (i
= 0; i
< seed_size
; i
++)
2035 argp
[i
% sizeof arg
] ^= seedp
[i
];
2039 # ifdef HAVE_LRAND48
2050 EMACS_TIME t
= current_emacs_time ();
2051 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2052 seed_random (&v
, sizeof v
);
2056 * Return a nonnegative random integer out of whatever we've got.
2057 * It contains enough bits to make a random (signed) Emacs fixnum.
2058 * This suffices even for a 64-bit architecture with a 15-bit rand.
2065 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2066 val
= (random () ^ (val
<< RAND_BITS
)
2067 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2068 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2069 return val
& INTMASK
;
2072 #ifndef HAVE_SNPRINTF
2073 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2075 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2077 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2078 ptrdiff_t nbytes
= size
- 1;
2083 va_start (ap
, format
);
2084 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2088 if (nbytes
== size
- 1)
2090 /* Calculate the length of the string that would have been created
2091 had the buffer been large enough. */
2092 char stackbuf
[4000];
2094 ptrdiff_t bsize
= sizeof stackbuf
;
2095 va_start (ap
, format
);
2096 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2102 if (INT_MAX
< nbytes
)
2115 /* If a backtrace is available, output the top lines of it to stderr.
2116 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2117 This function may be called from a signal handler, so it should
2118 not invoke async-unsafe functions like malloc. */
2120 emacs_backtrace (int backtrace_limit
)
2122 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2123 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2127 if (thread_backtrace_npointers
)
2129 buffer
= thread_backtrace_buffer
;
2130 npointers
= thread_backtrace_npointers
;
2134 buffer
= main_backtrace_buffer
;
2135 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2140 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2141 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2142 if (bounded_limit
< npointers
)
2143 emacs_write (STDERR_FILENO
, "...\n", 4);
2151 terminate_due_to_signal (SIGABRT
, 40);
2155 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2156 Arrange for subprograms to not inherit the file descriptor.
2157 Prefer a method that is multithread-safe, if available.
2158 Do not fail merely because the open was interrupted by a signal.
2159 Allow the user to quit. */
2162 emacs_open (const char *file
, int oflags
, int mode
)
2165 oflags
|= O_CLOEXEC
;
2166 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2168 if (! O_CLOEXEC
&& 0 <= fd
)
2169 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2173 /* Open FILE as a stream for Emacs use, with mode MODE.
2174 Act like emacs_open with respect to threads, signals, and quits. */
2177 emacs_fopen (char const *file
, char const *mode
)
2179 int fd
, omode
, oflags
;
2181 char const *m
= mode
;
2185 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2186 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2187 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2188 default: emacs_abort ();
2194 case '+': omode
= O_RDWR
; break;
2195 case 'b': bflag
= O_BINARY
; break;
2196 case 't': bflag
= O_TEXT
; break;
2197 default: /* Ignore. */ break;
2200 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2201 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2205 emacs_close (int fd
)
2210 while ((rtnval
= close (fd
)) == -1
2211 && (errno
== EINTR
))
2214 /* If close is interrupted SunOS 4.1 may or may not have closed the
2215 file descriptor. If it did the second close will fail with
2216 errno = EBADF. That means we have succeeded. */
2217 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2223 /* Maximum number of bytes to read or write in a single system call.
2224 This works around a serious bug in Linux kernels before 2.6.16; see
2225 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2226 It's likely to work around similar bugs in other operating systems, so do it
2227 on all platforms. Round INT_MAX down to a page size, with the conservative
2228 assumption that page sizes are at most 2**18 bytes (any kernel with a
2229 page size larger than that shouldn't have the bug). */
2230 #ifndef MAX_RW_COUNT
2231 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2234 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2235 Return the number of bytes read, which might be less than NBYTE.
2236 On error, set errno and return -1. */
2238 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2240 register ssize_t rtnval
;
2242 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2243 passes a size that large to emacs_read. */
2245 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2246 && (errno
== EINTR
))
2251 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2252 or if a partial write occurs. If interrupted, process pending
2253 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2254 errno if this is less than NBYTE. */
2256 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2257 bool process_signals
)
2259 ptrdiff_t bytes_written
= 0;
2263 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2269 /* I originally used `QUIT' but that might causes files to
2270 be truncated if you hit C-g in the middle of it. --Stef */
2271 if (process_signals
&& pending_signals
)
2272 process_pending_signals ();
2284 return bytes_written
;
2287 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2288 interrupted or if a partial write occurs. Return the number of
2289 bytes written, setting errno if this is less than NBYTE. */
2291 emacs_write (int fildes
, char const *buf
, ptrdiff_t nbyte
)
2293 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2296 /* Like emacs_write, but also process pending signals if interrupted. */
2298 emacs_write_sig (int fildes
, char const *buf
, ptrdiff_t nbyte
)
2300 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2303 /* Write a diagnostic to standard error that contains MESSAGE and a
2304 string derived from errno. Preserve errno. Do not buffer stderr.
2305 Do not process pending signals if interrupted. */
2307 emacs_perror (char const *message
)
2310 char const *error_string
= strerror (err
);
2311 char const *command
= (initial_argv
&& initial_argv
[0]
2312 ? initial_argv
[0] : "emacs");
2313 /* Write it out all at once, if it's short; this is less likely to
2314 be interleaved with other output. */
2316 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2317 command
, message
, error_string
);
2318 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2319 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2322 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2323 emacs_write (STDERR_FILENO
, ": ", 2);
2324 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2325 emacs_write (STDERR_FILENO
, ": ", 2);
2326 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2327 emacs_write (STDERR_FILENO
, "\n", 1);
2332 /* Return a struct timeval that is roughly equivalent to T.
2333 Use the least timeval not less than T.
2334 Return an extremal value if the result would overflow. */
2336 make_timeval (EMACS_TIME t
)
2339 tv
.tv_sec
= t
.tv_sec
;
2340 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2342 if (t
.tv_nsec
% 1000 != 0)
2344 if (tv
.tv_usec
< 999999)
2346 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2356 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2357 ATIME and MTIME, respectively.
2358 FD must be either negative -- in which case it is ignored --
2359 or a file descriptor that is open on FILE.
2360 If FD is nonnegative, then FILE can be NULL. */
2362 set_file_times (int fd
, const char *filename
,
2363 EMACS_TIME atime
, EMACS_TIME mtime
)
2365 struct timespec timespec
[2];
2366 timespec
[0] = atime
;
2367 timespec
[1] = mtime
;
2368 return fdutimens (fd
, filename
, timespec
);
2371 /* Like strsignal, except async-signal-safe, and this function typically
2372 returns a string in the C locale rather than the current locale. */
2374 safe_strsignal (int code
)
2376 char const *signame
= 0;
2378 if (0 <= code
&& code
< sys_siglist_entries
)
2379 signame
= sys_siglist
[code
];
2381 signame
= "Unknown signal";
2387 /* For make-serial-process */
2389 serial_open (char *port
)
2391 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2394 error ("Could not open %s: %s",
2395 port
, emacs_strerror (errno
));
2398 ioctl (fd
, TIOCEXCL
, (char *) 0);
2404 #if !defined (HAVE_CFMAKERAW)
2405 /* Workaround for targets which are missing cfmakeraw. */
2406 /* Pasted from man page. */
2408 cfmakeraw (struct termios
*termios_p
)
2410 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2411 termios_p
->c_oflag
&= ~OPOST
;
2412 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2413 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2414 termios_p
->c_cflag
|= CS8
;
2416 #endif /* !defined (HAVE_CFMAKERAW */
2418 #if !defined (HAVE_CFSETSPEED)
2419 /* Workaround for targets which are missing cfsetspeed. */
2421 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2423 return (cfsetispeed (termios_p
, vitesse
)
2424 + cfsetospeed (termios_p
, vitesse
));
2428 /* For serial-process-configure */
2430 serial_configure (struct Lisp_Process
*p
,
2431 Lisp_Object contact
)
2433 Lisp_Object childp2
= Qnil
;
2434 Lisp_Object tem
= Qnil
;
2435 struct termios attr
;
2437 char summary
[4] = "???"; /* This usually becomes "8N1". */
2439 childp2
= Fcopy_sequence (p
->childp
);
2441 /* Read port attributes and prepare default configuration. */
2442 err
= tcgetattr (p
->outfd
, &attr
);
2444 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2446 #if defined (CLOCAL)
2447 attr
.c_cflag
|= CLOCAL
;
2450 attr
.c_cflag
|= CREAD
;
2453 /* Configure speed. */
2454 if (!NILP (Fplist_member (contact
, QCspeed
)))
2455 tem
= Fplist_get (contact
, QCspeed
);
2457 tem
= Fplist_get (p
->childp
, QCspeed
);
2459 err
= cfsetspeed (&attr
, XINT (tem
));
2461 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2462 emacs_strerror (errno
));
2463 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2465 /* Configure bytesize. */
2466 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2467 tem
= Fplist_get (contact
, QCbytesize
);
2469 tem
= Fplist_get (p
->childp
, QCbytesize
);
2471 tem
= make_number (8);
2473 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2474 error (":bytesize must be nil (8), 7, or 8");
2475 summary
[0] = XINT (tem
) + '0';
2476 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2477 attr
.c_cflag
&= ~CSIZE
;
2478 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2480 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2481 if (XINT (tem
) != 8)
2482 error ("Bytesize cannot be changed");
2484 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2486 /* Configure parity. */
2487 if (!NILP (Fplist_member (contact
, QCparity
)))
2488 tem
= Fplist_get (contact
, QCparity
);
2490 tem
= Fplist_get (p
->childp
, QCparity
);
2491 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2492 error (":parity must be nil (no parity), `even', or `odd'");
2493 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2494 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2495 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2500 else if (EQ (tem
, Qeven
))
2503 attr
.c_cflag
|= PARENB
;
2504 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2506 else if (EQ (tem
, Qodd
))
2509 attr
.c_cflag
|= (PARENB
| PARODD
);
2510 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2513 /* Don't error on no parity, which should be set by cfmakeraw. */
2515 error ("Parity cannot be configured");
2517 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2519 /* Configure stopbits. */
2520 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2521 tem
= Fplist_get (contact
, QCstopbits
);
2523 tem
= Fplist_get (p
->childp
, QCstopbits
);
2525 tem
= make_number (1);
2527 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2528 error (":stopbits must be nil (1 stopbit), 1, or 2");
2529 summary
[2] = XINT (tem
) + '0';
2530 #if defined (CSTOPB)
2531 attr
.c_cflag
&= ~CSTOPB
;
2532 if (XINT (tem
) == 2)
2533 attr
.c_cflag
|= CSTOPB
;
2535 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2536 if (XINT (tem
) != 1)
2537 error ("Stopbits cannot be configured");
2539 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2541 /* Configure flowcontrol. */
2542 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2543 tem
= Fplist_get (contact
, QCflowcontrol
);
2545 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2546 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2547 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2548 #if defined (CRTSCTS)
2549 attr
.c_cflag
&= ~CRTSCTS
;
2551 #if defined (CNEW_RTSCTS)
2552 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2554 #if defined (IXON) && defined (IXOFF)
2555 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2559 /* Already configured. */
2561 else if (EQ (tem
, Qhw
))
2563 #if defined (CRTSCTS)
2564 attr
.c_cflag
|= CRTSCTS
;
2565 #elif defined (CNEW_RTSCTS)
2566 attr
.c_cflag
|= CNEW_RTSCTS
;
2568 error ("Hardware flowcontrol (RTS/CTS) not supported");
2571 else if (EQ (tem
, Qsw
))
2573 #if defined (IXON) && defined (IXOFF)
2574 attr
.c_iflag
|= (IXON
| IXOFF
);
2576 error ("Software flowcontrol (XON/XOFF) not supported");
2579 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2581 /* Activate configuration. */
2582 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2584 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2586 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2587 pset_childp (p
, childp2
);
2589 #endif /* not DOS_NT */
2591 /* System depended enumeration of and access to system processes a-la ps(1). */
2595 /* Process enumeration and access via /proc. */
2598 list_system_processes (void)
2600 Lisp_Object procdir
, match
, proclist
, next
;
2601 struct gcpro gcpro1
, gcpro2
;
2602 register Lisp_Object tail
;
2604 GCPRO2 (procdir
, match
);
2605 /* For every process on the system, there's a directory in the
2606 "/proc" pseudo-directory whose name is the numeric ID of that
2608 procdir
= build_string ("/proc");
2609 match
= build_string ("[0-9]+");
2610 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2612 /* `proclist' gives process IDs as strings. Destructively convert
2613 each string into a number. */
2614 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2617 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2621 /* directory_files_internal returns the files in reverse order; undo
2623 proclist
= Fnreverse (proclist
);
2627 #elif defined DARWIN_OS || defined __FreeBSD__
2630 list_system_processes (void)
2633 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2635 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2638 struct kinfo_proc
*procs
;
2641 struct gcpro gcpro1
;
2642 Lisp_Object proclist
= Qnil
;
2644 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2647 procs
= xmalloc (len
);
2648 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2655 len
/= sizeof (struct kinfo_proc
);
2656 for (i
= 0; i
< len
; i
++)
2659 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2661 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2671 /* The WINDOWSNT implementation is in w32.c.
2672 The MSDOS implementation is in dosfns.c. */
2673 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2676 list_system_processes (void)
2681 #endif /* !defined (WINDOWSNT) */
2683 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2685 time_from_jiffies (unsigned long long tval
, long hz
)
2687 unsigned long long s
= tval
/ hz
;
2688 unsigned long long frac
= tval
% hz
;
2691 if (TYPE_MAXIMUM (time_t) < s
)
2693 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2694 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2695 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2698 /* This is reachable only in the unlikely case that HZ * HZ
2699 exceeds ULLONG_MAX. It calculates an approximation that is
2700 guaranteed to be in range. */
2701 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2702 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2703 ns
= frac
/ hz_per_ns
;
2706 return make_emacs_time (s
, ns
);
2710 ltime_from_jiffies (unsigned long long tval
, long hz
)
2712 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2713 return make_lisp_time (t
);
2720 EMACS_TIME up
= make_emacs_time (0, 0);
2723 fup
= emacs_fopen ("/proc/uptime", "r");
2727 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2728 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2730 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2731 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2732 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2735 if (TYPE_MAXIMUM (time_t) < upsec
)
2737 upsec
= TYPE_MAXIMUM (time_t);
2738 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2742 int upfraclen
= upfrac_end
- upfrac_start
;
2743 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2745 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2747 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2749 up
= make_emacs_time (upsec
, upfrac
);
2758 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2759 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2762 procfs_ttyname (int rdev
)
2765 char name
[PATH_MAX
];
2768 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2773 unsigned long minor_beg
, minor_end
;
2774 char minor
[25]; /* 2 32-bit numbers + dash */
2777 while (!feof (fdev
) && !ferror (fdev
))
2779 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2780 && major
== MAJOR (rdev
))
2782 minor_beg
= strtoul (minor
, &endp
, 0);
2784 minor_end
= minor_beg
;
2785 else if (*endp
== '-')
2786 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2790 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2792 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2800 return build_string (name
);
2803 static unsigned long
2804 procfs_get_total_memory (void)
2807 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2810 fmem
= emacs_fopen ("/proc/meminfo", "r");
2814 unsigned long entry_value
;
2815 char entry_name
[20]; /* the longest I saw is 13+1 */
2817 while (!feof (fmem
) && !ferror (fmem
))
2819 if (fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
) >= 2
2820 && strcmp (entry_name
, "MemTotal:") == 0)
2822 retval
= entry_value
;
2833 system_process_attributes (Lisp_Object pid
)
2835 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2839 long clocks_per_sec
;
2841 char procbuf
[1025], *p
, *q
;
2844 static char const default_cmd
[] = "???";
2845 const char *cmd
= default_cmd
;
2846 int cmdsize
= sizeof default_cmd
- 1;
2847 char *cmdline
= NULL
;
2848 ptrdiff_t cmdline_size
;
2851 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2854 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2855 long priority
, niceness
, rss
;
2856 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2857 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2859 Lisp_Object attrs
= Qnil
;
2860 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2861 struct gcpro gcpro1
, gcpro2
;
2863 CHECK_NUMBER_OR_FLOAT (pid
);
2864 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2865 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2866 if (stat (procfn
, &st
) < 0)
2869 GCPRO2 (attrs
, decoded_cmd
);
2873 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2875 pw
= getpwuid (uid
);
2878 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2881 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2883 gr
= getgrgid (gid
);
2886 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2888 strcpy (fn
, procfn
);
2889 procfn_end
= fn
+ strlen (fn
);
2890 strcpy (procfn_end
, "/stat");
2891 fd
= emacs_open (fn
, O_RDONLY
, 0);
2892 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2894 procbuf
[nread
] = '\0';
2897 p
= strchr (p
, '(');
2900 q
= strrchr (p
+ 1, ')');
2910 /* Command name is encoded in locale-coding-system; decode it. */
2911 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2912 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2913 Vlocale_coding_system
, 0);
2914 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2918 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2920 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2921 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2922 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2923 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2924 &u_time
, &s_time
, &cutime
, &cstime
,
2925 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2930 state_str
[1] = '\0';
2931 tem
= build_string (state_str
);
2932 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2934 /* Stops GCC whining about limited range of data type. */
2939 thcount_eint
= thcount
;
2940 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2941 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2942 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2943 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2944 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2945 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2946 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2947 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2948 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2949 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2950 if (clocks_per_sec
< 0)
2951 clocks_per_sec
= 100;
2952 attrs
= Fcons (Fcons (Qutime
,
2953 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2955 attrs
= Fcons (Fcons (Qstime
,
2956 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2958 attrs
= Fcons (Fcons (Qtime
,
2959 ltime_from_jiffies (s_time
+ u_time
,
2962 attrs
= Fcons (Fcons (Qcutime
,
2963 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2965 attrs
= Fcons (Fcons (Qcstime
,
2966 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2968 attrs
= Fcons (Fcons (Qctime
,
2969 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2971 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2972 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2973 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2974 tnow
= current_emacs_time ();
2975 telapsed
= get_up_time ();
2976 tboot
= sub_emacs_time (tnow
, telapsed
);
2977 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2978 tstart
= add_emacs_time (tboot
, tstart
);
2979 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2980 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2981 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2982 telapsed
= sub_emacs_time (tnow
, tstart
);
2983 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2984 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2985 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2986 / EMACS_TIME_TO_DOUBLE (telapsed
));
2989 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2990 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2993 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3000 strcpy (procfn_end
, "/cmdline");
3001 fd
= emacs_open (fn
, O_RDONLY
, 0);
3005 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
3007 if (emacs_read (fd
, &ch
, 1) != 1)
3010 if (c_isspace (c
) || c
== '\\')
3011 cmdline_size
++; /* for later quoting, see below */
3015 cmdline
= xmalloc (cmdline_size
+ 1);
3016 lseek (fd
, 0L, SEEK_SET
);
3018 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
3019 cmdline
[nread
++] = '\0';
3022 /* Assigning zero to `nread' makes us skip the following
3023 two loops, assign zero to cmdline_size, and enter the
3024 following `if' clause that handles unknown command
3028 /* We don't want trailing null characters. */
3029 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
3031 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
3033 /* Escape-quote whitespace and backslashes. */
3034 if (c_isspace (*p
) || *p
== '\\')
3036 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
3040 else if (*p
== '\0')
3043 cmdline_size
= nread
;
3047 cmdline_size
= cmdsize
+ 2;
3048 cmdline
= xmalloc (cmdline_size
+ 1);
3049 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3052 /* Command line is encoded in locale-coding-system; decode it. */
3053 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
3054 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3055 Vlocale_coding_system
, 0);
3057 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3064 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3066 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3067 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3068 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3069 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3070 #undef _FILE_OFFSET_BITS
3072 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3077 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3078 #define _FILE_OFFSET_BITS 64
3079 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3081 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3084 system_process_attributes (Lisp_Object pid
)
3086 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3091 struct psinfo pinfo
;
3097 Lisp_Object attrs
= Qnil
;
3098 Lisp_Object decoded_cmd
, tem
;
3099 struct gcpro gcpro1
, gcpro2
;
3101 CHECK_NUMBER_OR_FLOAT (pid
);
3102 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3103 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3104 if (stat (procfn
, &st
) < 0)
3107 GCPRO2 (attrs
, decoded_cmd
);
3111 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3113 pw
= getpwuid (uid
);
3116 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3119 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3121 gr
= getgrgid (gid
);
3124 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3126 strcpy (fn
, procfn
);
3127 procfn_end
= fn
+ strlen (fn
);
3128 strcpy (procfn_end
, "/psinfo");
3129 fd
= emacs_open (fn
, O_RDONLY
, 0);
3131 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3133 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3134 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3135 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3139 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3140 state_str
[1] = '\0';
3141 tem
= build_string (state_str
);
3142 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3145 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3146 need to get a string from it. */
3148 /* FIXME: missing: Qtpgid */
3160 Are they available? */
3162 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3163 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3164 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3165 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3166 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3168 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3169 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3170 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3172 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3173 range 0 .. 2**15, representing 0.0 .. 1.0. */
3174 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3175 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3178 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3179 strlen (pinfo
.pr_fname
)),
3180 Vlocale_coding_system
, 0);
3181 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3183 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3184 strlen (pinfo
.pr_psargs
)),
3185 Vlocale_coding_system
, 0);
3186 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3196 #elif defined __FreeBSD__
3199 timeval_to_EMACS_TIME (struct timeval t
)
3201 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3205 make_lisp_timeval (struct timeval t
)
3207 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3211 system_process_attributes (Lisp_Object pid
)
3214 int pagesize
= getpagesize ();
3221 char args
[MAXPATHLEN
];
3224 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3225 struct kinfo_proc proc
;
3226 size_t proclen
= sizeof proc
;
3228 struct gcpro gcpro1
, gcpro2
;
3229 Lisp_Object attrs
= Qnil
;
3230 Lisp_Object decoded_comm
;
3232 CHECK_NUMBER_OR_FLOAT (pid
);
3233 CONS_TO_INTEGER (pid
, int, proc_id
);
3236 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3239 GCPRO2 (attrs
, decoded_comm
);
3241 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3244 pw
= getpwuid (proc
.ki_uid
);
3247 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3249 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3252 gr
= getgrgid (proc
.ki_svgid
);
3255 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3257 decoded_comm
= code_convert_string_norecord
3258 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3259 Vlocale_coding_system
, 0);
3261 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3263 char state
[2] = {'\0', '\0'};
3264 switch (proc
.ki_stat
)
3286 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3289 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3290 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3291 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3294 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3297 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3299 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3300 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3301 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3302 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3303 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3305 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3307 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3309 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3310 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3311 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3313 attrs
= Fcons (Fcons (Qcutime
,
3314 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3316 attrs
= Fcons (Fcons (Qcstime
,
3317 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3319 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3320 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3321 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3323 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3325 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3326 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3327 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3328 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3329 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3332 now
= current_emacs_time ();
3333 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3334 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3336 len
= sizeof fscale
;
3337 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3342 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3344 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3345 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3346 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3350 len
= sizeof npages
;
3351 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3353 double pmem
= (proc
.ki_flag
& P_INMEM
3354 ? 100.0 * proc
.ki_rssize
/ npages
3356 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3359 mib
[2] = KERN_PROC_ARGS
;
3361 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3364 for (i
= 0; i
< len
; i
++)
3366 if (! args
[i
] && i
< len
- 1)
3371 (code_convert_string_norecord
3372 (build_unibyte_string (args
),
3373 Vlocale_coding_system
, 0));
3375 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3382 /* The WINDOWSNT implementation is in w32.c.
3383 The MSDOS implementation is in dosfns.c. */
3384 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3387 system_process_attributes (Lisp_Object pid
)
3392 #endif /* !defined (WINDOWSNT) */